Our 4015 cabling has a 6 pin male and 6 pin female connector on either side of the same durable cable that we us on our flash heads. (If you have the older Novatron 5 pin connector on your power pack, you'll need our 4012 Adapter). Only use extension cables on flash heads when it is necessary. A 15-foot extension cable decreases the flash output by around a quarter of an f-stop. We also have 25-foot cables. See product 4025. Be sure you have a safe lighting setup. Don't have any cable over extended, that could cause the lighting instrument to fall. Don't let your cables dangle in the air, where someone could trip over them. Sometime, situations require a few extra feet of cabling. If you're a photographer that shoots on location, not knowing exactly what you might be getting into, some extra cabling is a good idea to have on hand.